Only working copy of 50 year old computer program found when cleaning out office [video]
youtube.comDiscussion at the time: https://news.ycombinator.com/item?id=45840321
And more developments and analysis since:
An initial analysis of the discovered Unix V4 tape
https://news.ycombinator.com/item?id=46367744
Unix v4 (1973) – Live Terminal
https://news.ycombinator.com/item?id=46468283
Fixing a Buffer Overflow in Unix v4 Like It's 1973
From HN guidelines: Otherwise please use the original title, unless it is misleading or linkbait; don't editorialize.
You're not exactly new here, afaict...